I have a Canon 7D and it has completely stopped reading my 64GB Sandisk memory card. I don't think the issue is a bent pin because the camera reads other cards fine. When I insert the card into my Macbook Pro it doesn't even show up. I have investigated this problem on many sites and threads and haven't found any conclusive answers. Could anyone tell me what I should try?
The card won't read in the camera or in a computer, but both devices will read other cards? Sounds like a dead card to me.
Time to get a new card.
Quiet possible that a data recovery lab could still retrieve your photos. They will have equipment that can recover the data on the card. Usually, the only thing preventing them from doing that, is if the card is toast.